September 20, 2018

Today’s digest presents reviews covering potential of microbiome in olfactory communication and oral-gut microbiome axis in rheumatoid arthritis; articles on association of human gut microbiome with different diseases; news on antibiotics and scientific data on personality types in humans.

General microbiome

Review: The Extended Genotype: Microbially Mediated Olfactory Communication – Alexandra J.R. Carthey – Trends in Ecology and Evolution

Talk to your gut: the oral-gut microbiome axis and its immunomodulatory role in the etiology of rheumatoid arthritis – Marines du Teil Espina – FEMS Microbiology Reviews

Commmentary: Regulating stool for microbiota transplantation – Pilar N Ossorio – Gut microbes

Proteomics and the microbiome: pitfalls and potential – Huafeng Lin – Expert Review of Proteomics

Pregnancy and early life

Postnatal exposure to household disinfectants, infant gut microbiota and subsequent risk of overweight in children – Mon H. Tun – Canadian Medical Association Journal

Human gut microbiome

Gut Microbiota Differs in Composition and Functionality Between Children With Type 1 Diabetes, MODY2, and Healthy Control Subjects: A Case-Control Study – Isabel Leiva-Gea – Diabetes Care

Analysis of gut microbiota profiles and microbe-disease associations in children with autism spectrum disorders in China – Mengxiang Zhang – Scientific Reports

Mucosal microbiota of intestinal polyps reveals putative biomarkers of colorectal cancer – Marta Mangifesta – Scientific Reports

Predicting recurrence of Clostridium difficile infection following encapsulated fecal microbiota transplantation – Christopher Staley – Microbiome

Could fecal phenylacetic and phenylpropionic acids be used as indicators of health status? – Isabel Gutiérrez-Díaz – Journal of Agricultural and Food Chemisty

Altered intestinal antibacterial gene expression response profile in irritable bowel syndrome is linked to bacterial composition and immune activation – Sean M. P. Bennet – Neurogastroenterology and Motility

Animal experiments

Melatonin reprogramming of gut microbiota improves lipid dysmetabolism in high fat diet-fed mice – Jie Yin – Journal of Pineal Research

Water and extremophile microbiome

Dynamics of microbial populations mediating biogeochemical cycling in a freshwater lake – Keith Arora-Williams – Microbiome

Probiotics/Prebiotics

The Impact of Probiotic Supplements on Cognitive Parameters in Euthymic Individuals with Bipolar Disorder: A Pilot Study – Eva Z Reininghaus – Neuropsychobiology

Microbes in the news

The case for expensive antibioticshttp://www.wired.com

Crucial antibiotics still used on US farms despite public health fear  The Guardian

Non-microbiology picks

A robust data-driven approach identifies four personality types across four large data sets – Martin Gerlach – Nature Human Behaviour

 

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Article post

Microbiota depletion shifts colonocyte substrate utilization

In the fed state, glucose is the major fuel to most cell types in the body. In contrast, colonic epithelial cells or colonocytes utilize butyrate as their major energy source. Butyrate is one of the short chain fatty acids (SCFAs), a class of microbial metabolites produced by microbial fermentation of dietary fiber in gut. When the gut microbiota is depleted, such as in germ-free (GF) mice, butyrate levels along with other SCFAs decline prompting “starved” colonocytes to shift their substrate utilization to an alternative fuel, such as glucose.

Glucose undergo oxidative metabolism in cells to produce energy. In contrast, early ex vivo experiments studying substrate utilization in isolated colonocytes of rats using radioactive tracers revealed that about 80% of glucose is rather converted into lactate in colonocytes [1]. Later Donohoe et al., found that colonocytes from GF mice produce approx. 4 times higher lactate compared with conventionally raised mice through anaerobic glycolysis of glucose [2]. However, lactate production is not an energy rewarding process and yields only 2-4 ATP compared with 36 ATPs from oxidative phosphorylation of glucose. Thus, the authors concluded that despite the shift in substrate utilization, the colonocytes in the GF mice remain in energy insufficient state [2].

In the recent article published in Nature Communications by Zarrinpar et al. [3], where gut microbiota (and butyrate!) was depleted using multiple gavage of antibiotics over the course of 4 weeks. The authors found that cecum tissue uses glucose as an alternative fuel in the absence of butyrate, and that the expression levels of 8 out of 10 enzymes in glycolysis pathway were upregulated in cecum of antibiotic- compared with vehicle-treated mice. Finally, they speculate that due to shift in substrate utilization in cecum, gut becomes a glucose sink that could account for overall improvement in glucose metabolism in the antibiotic-treated mice [3].

Perhaps this speculation needs more careful investigation. It is true that colonocytes use butyrate as their primary fuel; however, butyrate is not synthesized in isolation. Gut microbiota produces SCFAs that include acetate, propionate and butyrate. It has been shown that colonocytes prefer other SCFA such as acetate over glucose [4] probably because anaerobic glycolysis of glucose does not yield enough energy. In the article by Zarrinpar et al., there was a trend towards reduction of acetate in antibiotic- compared with vehicle-treated mice, but it was not depleted to the same level as butyrate [3]. Secondly, shift in colonocyte substrate utilization from butyrate to glucose is also observed in inflammatory bowel disease and DSS colitis model. This is indicated to be due to alteration in butyrate uptake and thus colonocytes utilize glucose leading to high amount of lactate accumulation in cells [5]. However, patients with IBS are more prone to develop glucose intolerance than the healthy people.

Studying substrate utilization in cecum/colonocytes is complex. It is true that the isolated colonocytes do not reflect the in vivo scenario. However, transcriptomic data (showing increased expression of glycolytic enzymes in intestinal tissue of antibiotic-treated mice) probably needs to be backed with enzyme activity measurements and tracer studies to  understand its impact on overall metabolism.

1. Ardawi, M.S. and E.A. Newsholme, Fuel utilization in colonocytes of the rat. Biochem J, 1985. 231(3): p. 713-9.

2. Donohoe, D.R., et al., Microbial regulation of glucose metabolism and cell-cycle progression in mammalian colonocytes. PLoS One, 2012. 7(9): p. e46589.

3. Zarrinpar, A., et al., Antibiotic-induced microbiome depletion alters metabolic homeostasis by affecting gut signaling and colonic metabolism. Nat Commun, 2018. 9(1): p. 2872.

4. Clausen, M.R. and P.B. Mortensen, Kinetic studies on the metabolism of short-chain fatty acids and glucose by isolated rat colonocytes. Gastroenterology, 1994. 106(2): p. 423-32.

5. Thibault, R., et al., Butyrate utilization by the colonic mucosa in inflammatory bowel diseases: a transport deficiency. Inflamm Bowel Dis, 2010. 16(4): p. 684-95.

December 21, 2017

Today’s digest features an original research article showing administration of Bifidobacterium may ameliorate toxicity of a a checkpoint blockade antibody in mice and a review on the concept of enterotypes in the human gut microbiome.

Events and jobs

Explorations in Data Analyses for Metagenomic Advances in Microbial Ecology (EDAMAME) workshop at Kellogg Biological Station 24-30 June 2018.

Human respiratory microbiome

Disordered oropharyngeal microbial communities in H7N9 patients with or without secondary bacterial lung infection – Emerging microbes & infections – Hai-feng Lu

Human gut microbiome

Review: Gut microbiota in 2017: Contribution of gut microbiota–host cooperation to drug efficacy – Nathalie M. Delzenne – Nature reviews gastroenterology & hepatology

Editorial : Are diets the answers to colon ills? Food, irritable bowel syndrome and the microbiome – Quigley Eamonn M.M.

Exposure to environmental microbiota explains persistent abdominal pain and irritable bowel syndrome after a major flood – NurFadhilah Yusof – Gut Pathogens

*Perspective : Enterotypes in the landscape of gut microbial community composition – Paul I. Costea – Nature Microbiology

Animal experiments

Evaluation of Probiotic Lactobacillus fermentum CCM 7421 Administration with Alginite in Dogs – Viola Strompfová – Probiotics and Antimicrobial Proteins

Bifidobacterium can mitigate intestinal immunopathology in the context of CTLA-4 blockade – Feng Wang – PNAS

Plant, root, and soil microbiome

Biogeography and ecological diversity patterns of rare and abundant bacteria in oil-contaminated soils – Shuo Jiao – Molecular ecology

Water and extremophile microbiome 

Bacterial Diversity and Biogeochemistry of Two Marine Shallow-Water Hydrothermal Systems off Dominica (Lesser Antilles) – Petra Pop Ristova – Frontiers in Microbiology

Temporal Dynamics of the Microbial Community Composition with a Focus on Toxic Cyanobacteria and Toxin Presence during Harmful Algal Blooms in Two South German Lakes – Pia I. Scherer – Frontiers in Microbiology

Probiotics / prebiotics

Galactooligosaccharide supplementation provides protection against Citrobacter rodentium-induced colitis without limiting pathogen burden – Hatem Kittana – Microbiology

Bifidobacteria and Their Molecular Communication with the Immune System – Lorena Ruiz – Frontiers in Microbiology

Phages and viruses

Toward Understanding Phage:Host Interactions in the Rumen; Complete Genome Sequences of Lytic Phages Infecting Rumen Bacteria – Rosalind A. Gilbert – Frontiers in Microbiology

Resolution of habitat-associated ecogenomic signatures in bacteriophage genomes and application to microbial source tracking – Lesley A. Ogilvie – The ISME Journal

Pre-print: Temperate phages as self-replicating weapons in bacterial competition – Xiang-Yi Li – bioRxiv

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Microbes in the news

Researchers Create Bacteria-Killing Steel Nanospikes

Are phages our best bet against antibiotic-resistant bacteria?

Bacteria Art

Science and Art Join Forces to Challenge our Anthropocentric Worldviews

Loyola Biology Professor Will Display Art At ARC Gallery

Anitha’s non-microbiology picks

Scientists discover entirely new material that cannot be explained by classical physics

Smothered jet may explain weird light from neutron star crash

Study of beetle flagellum offers possible way to improve medical devices

December 6, 2017

General microbiome

Review: The Role of High-Mobility Group Box-1 and Its Crosstalk with Microbiome in Rheumatoid Arthritis – Federico Biscetti – Mediators of Inflammation

Review: The human microbiota, infectious disease, and global health: challenges and opportunities – Abraham J. Waldman – ACS Infectious Diseases

Human respiratory microbiome

The lung microbiome in patients with pneumocystosis – J. Kehrmann – BMC Pulmonary Medicine

Review: Interplay between the lung microbiome and lung cancer – Qixing Mao – Cancer Letters

 
Human skin microbiome

Effect of alcohol-based hand rub on hand microbiome and hand skin health in hospitalized adult stem cell transplant patients: a pilot study – Pranab K. Mukherjee – Journal of the American Academy of Dermatology

Human vaginal microbiome

Cervicovaginal cytokines, sialidase activity and bacterial load in reproductive-aged women with intermediate vaginal flora – Mariana Morena de VieiraSantos-Greatti – Journal of Reproductive Immunology

Human gut microbiome

The gastrointestinal behavior of saponins and its significance for their bioavailability and bioactivities – Joaquín Navarro del Hierro – Journal of Functional Foods

Anthropometric and metabolic improvements in human type 2 diabetes after introduction of an Okinawan-based Nordic diet are not associated with changes in microbial diversity or SCFA concentrations – Fang Huang – International Journal of Food Sciences and Nutrition

Systematic review: ileoanal pouch microbiota in health and disease – J. P. Segal – Alimentary Pharmacology and Therapeutics

Systematic review: human gut dysbiosis induced by non-antibiotic prescription medications – Q. Le Bastard – Alimentary Pharmacology and Therapeutics

Review: The “Gut Feeling”: Breaking Down the Role of Gut Microbiome in Multiple Sclerosis – Samantha N. Freedman – Neurotherapeutics

Alternation of Gut Microbiota in Patients with Pulmonary Tuberculosis – Mei Luo – Frontiers in Microbiology

Postoperative changes of the microbiome: are surgical complications related to the gut flora? A systematic review – Ann-Kathrin Lederer – BMC Surgery

Animal experiments

Flos Lonicera Combined with Metformin Ameliorates Hepatosteatosis and Glucose Intolerance in Association with Gut Microbiota Modulation – Na R. Shin – Frontiers in Microbiology

Microbial Mechanistic Insight into the Role of Inulin in Improving Maternal Health in a Pregnant Sow Model – Pan Zhou – Frontiers in Microbiology

Review: Nano-Se Assimilation and Action in Poultry and Other Monogastric Animals: Is Gut Microbiota an Answer? – Peter F. Surai – Nanoscale Research Letters

Interactive effects of protein and carbohydrates on production of microbial metabolites in the large intestine of growing pigs – Marcin Taciak – Archives of Animal Nutrition

Flavonoid metabolite 3-(3-hydroxyphenyl)propionic acid formed by human microflora decreases arterial blood pressure in rats – Iveta Najmanová – Molecular Nutrition & Food Research

Animal microbiome

Review: The Microbiota Regulates Immunity and Immunologic Diseases in Dogs and Cats – Ian R. Tizard – Veterinary Clinics of North America: Small Animal Practice

Exploring fish microbial communities to mitigate emerging diseases in aquaculture – Irene de Bruijn – FEMS Microbiology Ecology

Bacterial community composition in the gut content of Lampetra japonica revealed by 16S rRNA gene pyrosequencing – Yu Zuo – Plos One

Review: Measuring the gut microbiome in birds: comparison of faecal and cloacal sampling – Elin Videvall – Molecular Ecology Resources

Social behaviour and gut microbiota in red-bellied lemurs (Eulemur rubriventer): In search of the role of immunity in the evolution of sociality – Aura Raulo – Journal of Animal Ecology

Gene expression in the chicken caecum is dependent on microbiota composition – Jiri Volf – Veterinary Research

The response of canine faecal microbiota to increased dietary protein is influenced by body condition – Jia Xu – BMC Veterinary Research

Plant, root, and soil microbiome

Soil microbial communities of three grassland ecosystems in the Bayinbuluke, China – Keqiang Shao – Canadian Journal of Microbiology

Simultaneous adaptation and maladaptation of tree populations to local rhizosphere microbial communities at different taxonomic scales – Richard A. Lankau – New Phytologist

Water and extremophile microbiome

Phylogenetic structure and metabolic properties of microbial communities in arsenic-rich waters of geothermal origin – Simona Crognale – Frontiers in Microbiology

Differences in planktonic microbial communities associated with three types of macrophyte stands in a shallow lake – Anikó Mentes – FEMS Microbiology Ecology

Probiotics / prebiotics

Designing synbiotics for improved human health – Sean M. Kearney – Microbial Biotechnology

Metabolomics

Blood serum metabolome of atopic dermatitis: Altered energy cycle and the markers of systemic inflammation – Aigar Ottas – Plos One

Comprehensive characterization of the in vitro and in vivo metabolites of limonin in human samples using LC-Q-TOF/MS – ShijiaLiu – Journal of Chromatography B

Anitha’s non-microbiology picks

Experiment demonstrates quantum mechanical effects from biological systems

IUCN Red List: Wild crops listed as threatened

December 1, 2017

Happy December! Today’s digest features research articles on prion like domains in phages, effect of high salt challenge on gut microbiota and immune system. Enjoy!

Events and jobs

Assistant Professor, Statistics and Microbiology – The University of Manitoba

Program Manager, Microbiology – RWJ-Pathology-PISC

General microbiome

Review: Experimental design and quantitative analysis of microbial community multiomics – Himel Mallick – Genome Biology

Pregnancy and early life

Low Microbial Diversity and Abnormal Microbial Succession Is Associated with Necrotizing Enterocolitis in Preterm Infants – Priscila T. Dobbler – Frontiers in Microbiology

Human respiratory microbiome

Colonic Bacteroides are positively associated with trabecular bone structure and programmed by maternal vitamin D in male but not female offspring in an obesogenic environment – C R Villa – International Journal of Obesity

Human skin microbiome

Diversity of bacterial communities on the facial skin of different age-group Thai males – Alisa Wilantho – PeerJ

Human oral microbiome

Oral Health and the Oral Microbiome in Pancreatic Cancer: An Overview of Epidemiological Studies – Paige M Bracci – The Cancer Journal

Bacterial alterations in salivary microbiota and their association in oral cancer – Wei-Hsiang Lee – Scientific Reports

Human vaginal microbiome

Review : Is bacterial vaginosis a disease? – Gregor Reid – Applied Microbiology and Biotechnology

Human gut microbiome

The gut mycobiome of the Human Microbiome Project healthy cohort – Andrea K. Nash – Microbiome

Analyses of gut microbiota and plasma bile acids enable stratification of patients for antidiabetic treatment – Yanyun Gu – Nature Communications

*Salt-responsive gut commensal modulates TH17 axis and disease – Nicola Wilck – Nature

Interactions between diet and the intestinal microbiota alter intestinal permeability and colitis severity in mice – Sean R.Llewellyn – Gastroenterology

Psychobiotics: A new approach for treating mental illness? – Snigdha Misra – Critical Reviews in Food Science and Nutrition

Small Intestinal Bacterial Overgrowth: Should Screening Be Included in the Pre-fecal Microbiota Transplantation Evaluation? – Jessica R. Allegretti – Digestive Diseases and Sciences

Gut microbiota-mediated generation of saturated fatty acids elicits inflammation in the liver in murine high-fat diet-induced steatohepatitis – Shoji Yamada – BMC Gastroenterology

Animal experiments

Vertical vs. horizontal transmission of the microbiome in akey disease vector, Ixodes pacificus – Jessica Y. Kwan – Molecular Ecology

Gut Microbiome-induced Shift of Acetate to Butyrate Positively Manages Dysbiosis in High Fat Diet – Xu Si – Molecular Nutrition and Food Research

Increased cortical neuronal responses to NMDA and improved attentional set-shifting performance in rats following prebiotic (B-GOS®) ingestion – Benjamin Gronier – European Neuropsychopharmacology

Effects of Lactobacillus acidophilus on gut microbiota composition in broilers challenged with Clostridium perfringens – Zhui Li – Plos One

Doxycycline induces dysbiosis in female C57BL/6NCrl mice – Felicia D. Duke Boynton – BMC Research Notes

Animal microbiome

The effect of dietary energy and protein levels on body weight, size, and microflora of ostrich chicks – Tahereh Nikravesh-Masouleh – Tropical Animal Health and Production

Gene and genome-centric analyses of koala and wombat fecal microbiomes point to metabolic specialization for Eucalyptus digestion – Miriam E. Shiffman – PeerJ

The microbiomes of blowflies and houseflies as bacterial transmission reservoirs – Ana Carolina M. Junqueira – Scientific Reports

Plant, root, and soil microbiome

The Patterns and Drivers of Bacterial and Fungal β-Diversity in a Typical Dryland Ecosystem of Northwest China – Jianming Wang – Frontiers in Microbiology

Water and extremophile microbiome

Highlighting patterns of fungal diversity and composition shaped by ocean currents using the East China Sea as a model – Wei Li – Molecular Ecology

Microbial Reduction of Fe(III) and SO42− and Associated Microbial Communities in the Alluvial Aquifer Groundwater and Sediments – Ji-Hoon Lee – Microbial Ecology

The influence of complex fermentation broth on denitrification of saline sewage in constructed wetlands by heterotrophic nitrifying/aerobic denitrifying bacterial communities – Guiping Fu – Bioresource Technology

Amplicon-Metagenomic Analysis of Fungi from Antarctic Terrestrial Habitats – Marcelo Baeza – Frontiers in Microbiology

Microbial Community Structure and Arsenic Biogeochemistry in Two Arsenic-Impacted Aquifers in Bangladesh – Edwin T. Gnanaprakasam – mBio

Probiotics / prebiotics

Short communication: Does early-life administration of a Megasphaera elsdenii probiotic affect long-term establishment of the organism in the rumen and alter rumen metabolism in the dairy calf? – T.T.Yohe – Journal of Dairy Science

Review: Effect of Probiotic Supplementation on CD4 Cell Count in HIV-Infected Patients: A Systematic Review and Meta-analysis – Asma Kazemi – Journal of Dietary Supplements

Phages and viruses

*Prion-Like Domains in Phagobiota – George Tetz – Frontiers in Microbiology

Bacteriophage Distributions and Temporal Variability in the Ocean’s Interior – Elaine Luo – mBio

Anitha’s non-microbiology picks

Hubble in a bubble: Scallop eyes act just like tiny telescopes

Jackpot of fossilized pterosaur eggs unearthed in China

Sorry, Grumpy Cat: Study finds dogs are brainier than cats

November 1, 2017

Happy November everybody! We have an interesting collection of articles today. Co-cultivation of plant beneficial fungi as an effective strategy to modulate the production of bioactive metabolites and a review on the benefits of berries and their phytochemicals on the digestive and immune systems. Enjoy!

Events and jobs

Microbiology Lab Assistant – Seattle, Washington – Labcorp

General microbiome

The Microbiome in Posttraumatic Stress Disorder and Trauma-Exposed Controls: An Exploratory Study – Hemmings, Sian M.J – Pyschosomatic Medicine

Human respiratory microbiome

Review : CF Airway Microbiome: Overturning the Old, Opening the Way for the New – George A. O’Toole – Journal of Bacteriology

Human oral microbiome

Effect of maltitol-containing chewing gum use on the composition of dental plaque microbiota in subjects with active dental caries – Erica M. Prosdocimi – Journal of Oral Microbiology

Human gut microbiome

The circulating microbiome signature and inferred functional metagenomics in alcoholic hepatitis – Puneet Puri – Hepatology

Diet, Environments, and Gut Microbiota. A Preliminary Investigation in Children Living in Rural and Urban Burkina Faso and Italy – Carlotta De Filippo – Frontiers in Microbiology

Gut microbiome of mothers delivering prematurely shows reduced diversity and lower relative abundance of Bifidobacterium and Streptococcus – Cecilie Dahl – Plos One

Review : Systematic review of the effects of the intestinal microbiota on selected nutrients and non-nutrient – Colette Shortt – European Journal of Nutrition

Cereal products derived from wheat, sorghum, rice and oats alter the infant gut microbiota in vitro – Hasinika K. A. H. Gamage – Scientific Reports

Animal experiments

Antibiotic treatment disrupts bacterial communities in the colon and rectum of SIV-infected macaques – Alexander S. Zevin – FEMS Microbiology Letters

Ophiopogonin D alleviates high-fat diet–induced metabolic syndrome and changes the structure of gut microbiota in mice – Siyu Chen – The FASEB Journal

Animal microbiome

Bacterial Species Identified on the Skin of Bottlenose Dolphins Off Southern California via Next Generation Sequencing Techniques – Corey D. Russo – Microbial Ecology

Skin and fur bacterial diversity and community structure on American southwestern bats: effects of habitat, geography and bat traits – Ara S. Winter – PeerJ

Analysis of the Microbial Diversity in the Fecal Material of Giraffes – Jessica M. Schmidt – Current Microbiology

Morphological and genetic factors shape the microbiome of a seabird species (Oceanodroma leucorhoa) more than environmental and social factors – Douglas S. Pearce – Microbiome

Metabolomics

Plasma Metabolites From Choline Pathway and Risk of Cardiovascular Disease in the PREDIMED (Prevention With Mediterranean Diet) Study – Marta Guasch-Ferré – Journal of the American Heart Association

Plant, root, and soil microbiome

Strong Regionality and Dominance of Anaerobic Bacterial Taxa Characterize Diazotrophic Bacterial Communities of the Arcto-Alpine Plant Species Oxyria digyna and Saxifraga oppositifolia – Manoj Kumar – Frontiers in Microbiology

An endophytic Bacillus strain promotes growth of oil palm seedling by fine root biofilm formation – MdHoirul Azri – Rhizosphere

Effect of auxin producing and phosphate solubilizing bacteria on mobility of soil phosphorus, growth rate, and P acquisition by wheat plants – Guzel R. Kudoyarova – Acta Physiologiae Plantarum

Contrasting effects of ammonium and nitrate additions on the biomass of soil microbial communities and enzyme activities in subtropical China – Chuang Zhang – Biogeosciences

Impact of land use change and soil organic carbon quality on microbial diversity in soils across Europe – Márton Szoboszlay – FEMS Microbiology Ecology

Microbial Diversity and Community Structure of Sulfate-Reducing and Sulfur-Oxidizing Bacteria in Sediment Cores from the East China Sea – Yu Zhang – Frontiers in Microbiology

Rhizosphere-associated Pseudomonas induce systemic resistance to herbivores at the cost of susceptibility to bacterial pathogens – Cara H. Haney – Molecular Ecology

*Co-Culture of Plant Beneficial Microbes as Source of Bioactive Metabolites – F. Vinale – Scientific Reports

Introducing BASE: the Biomes of Australian Soil Environments soil microbial diversity database – Andrew Bissett – Gigascience

Water and extremophile microbiome

Anaerobic digestion of spent mushroom substrate under thermophilic conditions: performance and microbial community analysis – Zheng Xiao – Applied Microbiology and Biotechnology

Metagenomic characterization of biofilter microbial communities in a full-scale drinking water treatment plant – Seungdae Oh – Water Research

Distinct microbial communities in the active and permafrost layers on the Tibetan Plateau – Yong-Liang Chen – Molecular Ecology

Community composition and assembly processes of the free-living and particle-attached bacteria in Taihu Lake – Dayong Zhao – FEMS Microbiology Ecology

Food Microbiology

Anti-obesity Effect of Exopolysaccharides Isolated from Kefir Grains – Juha Lim – J. Agric. Food Chem

Modulating Effects of Dicaffeoylquinic Acids from Ilex Kudingcha on Intestinal Microecology in vitro – Minhao Xie – Journal of Agricultural Food Chemistry

*Review of the health effects of berries and their phytochemicals on the digestive and immune systems – Coen Govers – Nutrition Reviews

Probiotics / prebiotics

Single-species versus dual-species probiotic supplementation as an emerging therapeutic strategy for obesity – G.Karimi – Nutrition, Metabolism and Cardiovascular Diseases

Bioinformatics

ROCker: accurate detection and quantification of target genes in short-read metagenomic data sets by modeling sliding-window bitscores – Luis H. Orellana – Nucleic Acids Research

Phages and viruses

Review : Assessing Species Diversity Using Metavirome Data: Methods and Challenges – Damayanthi Herath – Computational and Structural Biotechnology Journal

Microbes in the news

Caves Host Gooey Biofilms Built by Methane-Eating Bacteria

3D Printed Artificial Small Intestine to Advance Research on Gut Bacteria

Enzymes from dangerous bacteria turn into important tools for protein chemistry

Microbes on the market

The University Medical Center Groningen and Novogene announce the start of the 10K Metagenome Project

Science, publishing, and career

Book Chapter : Leading Change in Undergraduate STEM Education – Adam K. Leibovich – Educational and Outreach Projects from the Cottrell Scholars Collaborative Undergraduate and Graduate Education Volume 1

Anitha’s non-microbiology picks

Congratulations Nancy Scherich! The winner of this year’s ‘Dance Your Ph.D.’ contest

ROSINA spectral measurements bring comet’s chemistry to life

Scary as they are, few vampires have a backbone

 

October 4, 2017

Today’s digest features excellent reviews on recent advances in cryo-electron microscopy technology for understanding bacterial ribosome assembly,  and impact of gut microbiome on therapeutics. Happy reading!

General microbiome

Towards standards for human fecal sample processing in metagenomic studies – Paul I Costea – Nature Biotechnology

Assessment of variation in microbial community amplicon sequencing by the Microbiome Quality Control (MBQC) project consortium – Rashmi Sinha – Nature Biotechnology

Editorial : Microbiome yarns: microbiome basis of memory – Kenneth Timmis – Microbial Biotechnology

Review : Cross Talk: The Microbiota and Neurodevelopmental Disorders – John R. Kelly – Frontiers in Neuroscience

Review : Gut Microbiota, Immune System, and Bone – P. D’Amelio – Calcified Tissue International

Pregnancy and early life

Meconium microbiome as a new source of information about long-term health and disease: questions and answers – P. Wilczyńska – The Journal of Maternal-Fetal & Neonatal Medicine

Evolution in fecal bacterial/viral composition in infants of two central African countries (Gabon and Republic of the Congo) during their first month of life – Lionel Brazier – Plos one

A longitudinal study of the infant nasopharyngeal microbiota: The effects of age, illness and antibiotic use in a cohort of South East Asian children – Susannah J. Salter – Plos one

Human gut microbiome

Review : Microbiota in digestive cancers: our new partner? – Anthony Lopez – Carcinogenesis

*Review : Impacts of the Human Gut Microbiome on Therapeutics – Yoshiki Vázquez-Baeza – Annual Reviews

Associations between acute gastrointestinal GvHD and the baseline gut microbiota of allogeneic hematopoietic stem cell transplant recipients and donors – C Liu – Leukemia

Natural polyreactive IgA antibodies coat the intestinal microbiota – Jeffrey J. Bunker – Science

Time of day and eating behaviors are associated with the composition and function of the human gastrointestinal microbiota – Jennifer L Kaczmarek – The American Journal of Clinical Nutrition

The Effects of an Environmentally Relevant Level of Arsenic on the Gut Microbiome and its Functional Metagenome – Liang Chi – Toxicological Sciences

Animal experiments

Probiotics modulate gut microbiota and improve insulin sensitivity in DIO mice – Renata A.Bagarolli – The Journal of Nutritional Biochemistry

Decaffeinated green and black tea polyphenols decrease weight gain and alter microbiome populations and function in diet-induced obese mice – Susanne M. Henning – European Journal of Nutritional

Microbiota-related Changes in Bile Acid & Tryptophan Metabolism are Associated with Gastrointestinal Dysfunction in a Mouse Model of Autism – Anna V. Golubeva – EBioMedicine

Repeated Oral Exposure to Nε-Carboxymethyllysine, a Maillard Reaction Product, Alleviates Gut Microbiota Dysbiosis in Colitic Mice – Nesreen ALJahdali – Digestive Disease Sciences

Comparison of the Luminal and Mucosa-Associated Microbiota in the Colon of Pigs with and without Swine Dysentery – Eric R. Burrough – Frontiers in Veterinary Science

Animal microbiome

Untangling the cecal microbiota of feral chickens by culturomic and metagenomic analyses – Chiara Ferrario – Environmental Microbiology

Bacterial community associated with worker honeybees (Apis mellifera) affected by European foulbrood – Tomas Erban – PeerJ

Comparative characterization of bacterial communities in geese fed all-grass or high-grain diets – Qi Xu – Plos One

Plant, root, and soil microbiome

Implication of graphene oxide in Cd-contaminated soil: A case study of bacterial communities – TingXiong – Journal of Environmental Management

Elucidating the microbial community associated with the protein preference of sludge degrading worms – Steef de Valk – Environmental Technology

Bacterial microbiomes of individual ectomycorrhizal Pinus sylvestris roots are shaped by soil horizon and differentially sensitive to nitrogen addition – Srisailam Marupakula – Environmental Microbiology

A comparative study of composting the solid fraction of dairy manure with or without bulking material: performance and microbial community dynamics – Xiao-ZhongZhong -Bioresource Technology

Water and extremophile microbiome

Individual-level trait diversity predicts phytoplankton community properties better than species richness or evenness – Simone Fontana – The ISME Journal

Bacterial community dynamics within an aerobic granular sludge reactor treating wastewater loaded with pharmaceuticals – Catarina L.Amorim – Ecotoxicology and Environmental Safety

Food Microbiology

Chlorogenic acid versus amaranth’s caffeoylisocitric acid – Gut microbial degradation of caffeic acid derivatives – Maren Vollmer – Food Research International

Probiotics / prebiotics

Specific signatures of the gut microbiota and increased levels of butyrate in children treated with fermented cow’s milk containing heat-killed Lactobacillus paracasei CBA L74 – Roberto Berni Canani – Applied and Environmental Microbiology

Beneficial effects of a probiotic blend on gastrointestinal side effects induced by leflunomide and amlodipine in a rat model – S.C. Song – Beneficial Microbes

Phages and viruses

Characterization of the human DNA gut virome across populations with different subsistence strategies and geographical origin – Simone Rampelli – Environmental Microbiology

Metabolomics

Identification of phenolic metabolites in human urine after the intake of a functional food made from grape extract by a high resolution LTQ-Orbitrap-MS approach – Gemma Sasot – Food Research International
http://www.sciencedirect.com/science/article/pii/S0963996917300297?via%3Dihub

Bioinformatics

A broken promise: microbiome differential abundance methods do not control the false discovery rate – Stijn Hawinkel – Briefings in Bioinformatics
https://academic.oup.com/bib/article/doi/10.1093/bib/bbx104/4091293/A-broken-promise-microbiome-differential-abundance

Metagenomic assembly through the lens of validation: recent advances in assessing and improving the quality of genomes assembled from metagenomes – Nathan D. Olson – Briefings in Bioinformatics

Ananke: temporal clustering reveals ecological dynamics of microbial communities – Michael W. Hall – PeerJ

Detection of Increased Plasma Interleukin-6 Levels and Prevalence of Prevotella copri and Bacteroides vulgatus in the Feces of Type 2 Diabetes Patients – Aline Zazeri Leite – Frontiers in Immunology

k-SLAM: accurate and ultra-fast taxonomic classification and gene identification for large metagenomic data sets – David Ainsworth – Nucleic Acids Research

Techniques

* The impact of recent improvements in cryo-electron microscopy technology on the understanding of bacterial ribosome assembly – Aida Razi – Nucleic acids Research

Anitha’s non-microbiology picks

A cold, clear view of life wins chemistry Nobel

Nobel physics prize awards discovery in gravitational waves

Medicine Nobel Prize Goes to Circadian Rhythm Researchers

New portable blood analyzer could improve anemia detection worldwide

Computational study sheds doubt on latest theory of birds’ mysterious magnetic compass